ARM: UniPhier: move init stack area just below TEXT_BASE

There is no good reason to have the 0x1000 gap between
CONFIG_SYS_INIT_SP_ADDR and CONFIG_SYS_TEXT_BASE.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>

include/configs/uniphier.h

@@ -281,7 +281,7 @@
 #endif
 
 #define CONFIG_SPL_STACK		(0x0ff08000)
-#define CONFIG_SYS_INIT_SP_ADDR		((CONFIG_SYS_TEXT_BASE) - 0x00001000)
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_TEXT_BASE)
 
 #define CONFIG_PANIC_HANG